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ILC Simulations and Physics Studies at Fermilab--8/2006 update

version 0.1, John Yoh, 8/1/06
Please send all comments, addendum, suggestions, etc. to johny@fnal.gov


  1. Introduction--overview of ILC
  2. Available Software Framework/Tools
  3. Getting started at Fermilab
  4. Tutorial on sample projects
  5. Potential useful projects
  6. Currently ongoing projects
  7. Miscellaneous

(1) Introduction--overview of ILC

ILC (International Linear Collider) is a ongoing Global initiative to design, get approval from various governments, construct and operate an ILC by 2015-2017.
ILC will be a linear (20 mile long) collider of electrons and positrons beams, with a total Energy of 500 Gev, though future upgrade to 1 TeV may be possible.

The Goal of such a collider is to

  1. Discover the secrets of the Terascale--- study the Higgs particle (expected to be discovered in the forthcoming LHC collider at Cern, Geneva, Switzerland, due to come online in 2007)
  2. Shed light on dark matter
  3. Reveal the Ultimate unified theory

These are from Joe Lykken's talk on Physics case for ILC(pdf)

more detailed information on ILC current efforts are in Talks from July 2006 Vancouver Linear Accelerator workshop

For a more detailed advanced description of various physics objectives, see the 480 page "book" ILC Physics Resource guide for Snowmass 2001 ---(individual chapters can be downloaded separately--note that this is from 2001, so, some of machine information is outdated--as well as some of the Physics studies results)--

Many other useful links are
ALCPG (American Linear Collider Physics Group
ILC newline --weekly news letter from the ILC GDE--Global Design Effort--The GDE, headed by Barry Barish working with all the interested Physicists and accelerator people, is expected to arrived at a conceptual design--The ILC RDR (Reference Design Report) and the DCR (Detector Concept Report) both due early 2007--see GDE Report at Vancouver workshop

(2)Available Software Framework/Tools

Many Physicists interested in ILC have contributed software and studies, starting more than 10 years ago. For an overview of the Simulation studies, see Mark Thomson's review at the 4/06 Cambridge ILC software and Physics meeting Where are we now and what next

In particular, take a look at slide 4--which give a list of software framework and tools available for ILC simulation and Physics studies.

Much of the current effort at Fermilab involve using SLIC/org.lcsim/ LCIO/JAS3, as well as confluence. Some projects just use GEANT4.

Some other potentially useful web sites include
ilcsim information ilcsim is the Fermilab server for ilc simulation
lcsim--Linear Collider Simulation
2000 Linear Collider Physics Studies at Fermilab

(3)Getting started at Fermilab

You can test drive some of the software by following the instructions on lcsim getting started--using JAS3 with the LCSIM Event Browser or the Event Display plug-in, you can look at some events from a file generated at SLAC. You can then try doing some simple analysis.

There are 2+ (perhaps complementary) ways to work on ILC simulation studies at Fermilab

  1. Use your personal workstation or laptop to run JAS3 and do program development, testing on a few events--you need to download Java, etc. from slac--so, broadband is required.
  2. use the ilcsim server (contact Lynn Garren at garren@fnal.gov to get an account) and run your jobs there
  3. In addition, you can use the grid to run batch jobs--in case you need more cpu than available in the previous options.

(4)Tutorial on sample projects

(5)Potential useful projects--INCOMPLETE

Here's a partial list of potential studies projects (to be added later)--name included people who are working on these projects (), or those who are interested []


  1. Understand the potential gamma-gamma backgrounds to physics proecesses such as WH, ZH, etc. [Yoh]

Simulation Studies projects

  1. Understand Calorimetry resolution--how to improve it (Para, Yu, Wenzel)

(6)Currently ongoing projects

Many Simulation projects are ongoing at Fermilab currently-- if some particular project interest you, please contact the appropriate person(s)--here's a partial list (to be updated)

  1. Muon reconstruction simulation (Gene Fisk, Carolin Milstene
  2. Si vertex tracking (Marcel DeMarteau, Caroline Milstene)
  3. Calorimetry studies (Adam Para, Eiko Yu, Hans Wenzel)


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